That's pretty much the scale of what some of us have been saying about the differences between cables. There are small but marked differences which can tune an already well performing system.

Changes in wires are generally subtle but I have come across some cheapish ones that seriously strangle the sound. It's about not adding much if anything to the sound of the components, which is certainly not price related. I'm sure if you go up the range of a good sounding brand there will be some improvement depending how revealing the system is. More likely to be in terms of more extended frequencies than fundamentals to the presentation. I'm finding NVA cables let more of the music through, which is difficult to describe in traditional hi-f lingo. However most of their cables are not expensive in the world of hi-fi.

I've heard cable some people consider 'World Class' which in my opinion was thin, sharp and unlistenable and other cable which wasn't considered anything special sound awesome. Some of it I guess is related to the system component your using I guess too.

I have certainly heard significant difference from cable changes.

FWIW I have heard fundamental differences with speaker cable. Often (although by no means always) more than amps or digital sources. Turntable arm and cartridge differences have probably been the biggest.

My thoughts on the various cables have been well documented here, but I'd say to anyone that it's worth trying different cables, especially if and when you change kit. If I had to recommend a "one size fits all" cable, I'd probably advise trying some used Linn K20 or some NVA LS2. Of course, personal taste also plays a part so universal recommendations are hard.

Edit: Slightky off topic but worth adding that I haven't usually heard anything like the same differences with interconnects. Sure, there are changes in tone, but it's more like a "Goldilocks" just rightness when you make the right choice. By far and away the best and the only cable to go beyond this was TIS. That had something else the others lacked..... Or maybe it was missing a drawback they all had.....

Totally agree, you suggested Exposure cable for me and it was a massive upgrade on the Naim NAC A5 I had before.

I tried it back then. It had a lovely clarity to it, but no drive. I'm sure it would have its applications. I always thought of (but never tried) solid core cable for the tweeters in a bi-amp system. DNM speaker cable (like NAC A5) is a pure rip-off at today's prices IMO. I think it was less than 2 quid a metre back then. 

I tried solid core for a while. Great in the midrange but a bit lacking at the frequency extremes. Fun to make using a hand drill from stripped T&E cable.

I really liked the NVA speaker cable I tried in my system and remember writing a positive review at the time. In the past I not heard to many differences unless compairing to cheaper or harsh sounding cables

Absolutely Chris! The speaker cable is the completion of an electrical circuit between amp and speakers and 'performance' depends on the properties of both.

Thin solid core usually suits wideband single drivers where it offers some additional resistance, missing from the absence of crossover components and can have the opposite effect of that experienced with more complex speakers. Depends on the output character of the amp of course, but I imagine the majority of amps are designed and tuned with multi-way speakers.

IMHO the exceptional cables are those which either suit a high number of combinations or a limited number exceptionally well.